JPH0640708Y2 - Air suction car - Google Patents

Description

Detailed description of the invention (a) Industrial application field
Air volume suction truck that sucks suctioned substances such as empty cans, mud, and water into the tank, and especially discharges clean water separated from the suctioned substances stored in the tank to the outside of the tank automatically while suctioning. In addition, the present invention relates to an air suction vehicle that assists in this drainage work.

(B) Conventional Technique In a conventional air volume suction vehicle, a tank mounted on a vehicle body is provided with a suction pipe and a discharge pipe, and an opening / closing valve is provided in each of the pipes.

Then, the blower is driven to open the opening / closing valve of the suction pipe, and the suction work of sucking the suctioned substance from the suction pipe into the tank is performed.
When suctioned material enters the tank to some extent, the on-off valve of the discharge pipe is opened, drainage work for discharging the clean water separated from the suctioned material from the discharge pipe is performed at the same time as the suction work, and when the drainage work is completed, the on-off valve is closed. I was only doing suction work.

(C) Problem to be solved by the invention For this reason, it is necessary to open and close the opening / closing valve of the discharge pipe each time draining work is performed, which not only complicates the work but also lengthens the work time. There is a problem, and in the drainage work, the drainage work and the suction work are performed at the same time, so that there is a problem that the tank has a negative pressure, the drainage speed is slow, and the work time is long. Therefore, the purpose of this invention is to simplify the work by automatically performing the suction work and the drainage work at the same time without opening / closing the opening / closing valve of the discharge pipe, and to increase the drainage speed of the drainage work. To shorten the drainage work time and overall work time.

(D) Means for Solving the Problems The present invention has been made to solve the above problems, and stones, empty cans, mud, water, etc. are generated in the tank mounted on the vehicle body by the flow of wind driven by the blower. The suction work for sucking in the suctioned product and the drainage work for discharging the clean water separated from the suctioned product in the tank to the outside of the tank through the discharge pipe can be performed at the same time. Is that a check valve for automatically performing the discharging work and an ejector for assisting the draining work by the exhaust air of the blower are interposed, and the check valve is located closer to the tank than the ejector.

(E) Function When the open / close valve of the suction pipe is opened and the blower is driven, the suctioned substances such as stones, empty cans, mud, and water are sucked into the tank by the flow of wind.

At this time, the check valve is closed due to the negative pressure inside the tank.

When the suctioned material is contained in the tank to some extent, the check valve opens due to the water pressure of the clean water separated from the suctioned material, and the clean water is automatically discharged from the discharge pipe.At this time, the blower exhaust air is discharged to the ejector. Sending helps drainage of the clean water and shortens drainage work.

(F) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral (1) is a vehicle body, and a tank (2) for storing suctioned substances such as stones, cans, mud, and water is mounted on the rear portion of the vehicle body (1), and a wind is provided in the central portion of the vehicle body (1). It has a blower (3) to generate it.

The tank (2) is mounted so as to be tiltable rearward so that the suctioned substance can be discharged by tilting rearward. The tank (2) includes a tank body (4) and the tank body (4).
It comprises an opening / closing lid (5) for opening and closing the rear end, and the opening / closing lid (5) is adapted to be rotated upward.

A suction pipe (6) communicating with the inside of the tank (2) is provided under the opening / closing lid (5), and an opening / closing valve (7) is provided in the suction pipe (6).

(8) is a discharge pipe provided on the side surface of the tank body (4),
The discharge pipe (8) is composed of a pipe (9) attached to the tank body (4) and an opening / closing valve (10).
A check valve (11) is installed between the valve and the on-off valve (10),
An ejector (12) is provided downstream of the on-off valve (10).

The ejector (12) includes an elbow portion (13) connected to the opening / closing valve (10) and a horizontal portion (14) connected to the elbow portion (13).
And a nozzle portion (15) installed inside the horizontal portion (14).

The nozzle part (15) is connected to a branch pipe (17) branched from the exhaust pipe (16) of the blower (3), and the tank (2)
When discharging the clean water inside, the exhaust air of the blower (3) is sent from the nozzle part (15) to help discharge the clean water.

The check valve (11) includes a casing (18) and an oscillating flapper (20) that opens and closes a communication passage (19) in the casing (18), and the flapper (20) is the tank (2). When the inside of the tank is made negative pressure, it swings counterclockwise to close the communication passageway (19) and close the check (11). The passage (19) is opened and the check valve (11) is opened.

In addition, (21) is a three-way valve installed at the branch point of the exhaust pipe (16) and the branch pipe (17), and (22) is a blower connecting the blower (3) and the tank (2). A pipe, (23) a suction hose attached to the on-off valve (7) when performing suction work, and (24) a drain hose when performing drainage work.
This is a discharge hose attached to the ejector (12). Also,
(25) is a chute fixed to the tank body (4).

By the way, although the branch pipe (17) is branched from the exhaust pipe (16) in the embodiment of the present invention, the branch pipe (17) is eliminated,
Directly put the exhaust pipe (16) into the nozzle (1) of the ejector (12).
Even if it is connected to 5), it has the same effect.

The present invention is constructed as described above, and the operation will be described below.

First, the suction hose (23) is connected to the on-off valve (7), and the discharge hose (24) is connected to the ejector (12).

Next, drive the blower (3) to generate wind, open both on-off valves (7) and (10), and suck the other end of the suction hose (23) such as stones, empty cans, mud, water, etc. Approach the aspirate.

As a result, it is possible to store the suctioned substances such as stones, cans, mud, and water in the tank (2) through the suction hose (23), the opening / closing valve (7), and the suction pipe (6).

At this time, since the left side of the flapper (20) of the check valve (11) is atmospheric pressure and the right side is negative pressure, the flapper (20) swings counterclockwise to close the communication passageway (19). .

After that, when some aspirated substances such as stones, empty cans, mud, and water were stored in the tank (2) to some extent, the clean water was easily separated from the stones and empty cans, and separated as shown in FIG. The flapper (20) swings counterclockwise due to the water pressure of the clean water, the communication passage (19) is opened, and the clean water is piped (9), check valve (11), open / close valve (10), ejector (13). ), Through the discharge hose (23).

At this time, the exhaust air of the blower (3) is sent to the ejector (12) in order to help drain the clean water, but the three-way valve (21) is operated to move the branch pipe (17) to the exhaust pipe (16). ).

Then, the exhaust air of the blower (3) is exhausted from the nozzle part (15) to the horizontal part (14), and the clean water flows into the discharge hose (23) vigorously with the exhaust air, which helps the discharge of the clean water and discharges it. Time is reduced.

By the way, although the exhaust air in the present invention passes through the tank (2), if the exhaust air is directly sucked from the blower (3) without passing through the tank (2), the drainage is further stopped.

(G) Effect of the Invention As described above, in the present invention, the drain pipe provided in the tank is provided with the check valve for automatically performing the drainage work and the ejector for assisting the drainage work by the exhaust air from the blower. Therefore, it is possible to shorten the working time of the discharging work for discharging the clean water and the entire work.

[Brief description of drawings]

FIG. 1 is a side view of an air suction vehicle of the present invention, FIGS. 2 and 3 are detailed explanatory views of a discharge pipe, a check valve, and an ejector, and FIG. 2 is a view when water is not discharged. A sectional view and FIG. 3 are sectional views when tap water is being drained. (1) is the vehicle body, (2) is a tank, (3) is a blower,
(8) is a discharge pipe, (11) is a check valve, and (12) is an ejector.

Claims (1)

[Scope of utility model registration request] 1. A suction work for sucking suctioned substances such as stones, empty cans, mud, and water by a wind flow driven by a blower into a tank mounted on a vehicle body, and clean water separated from the suctioned substances in the tank. In the air suction vehicle that is capable of performing the drainage work of discharging the air from the tank through the discharge pipe at the same time, the discharge pipe is drained by the check valve and the blower exhaust air that automatically performs the discharge work. And an air ejector for assisting the air flow, and the check valve is located on the tank side of the ejector.